Bump serde_with from 3.7.0 to 3.8.1 (#948)

Bumps [serde_with](https://github.com/jonasbb/serde_with) from 3.7.0 to 3.8.1.
- [Release notes](https://github.com/jonasbb/serde_with/releases)
- [Commits](jonasbb/serde_with@v3.7.0...v3.8.1)

---
updated-dependencies:
- dependency-name: serde_with
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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